Printing press paper gripper



March 8, 1932. w. W. HERBST 1,848,629`

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March 8, 1932. w. w. HERBST PRINTING PRESS PAPER GRIPPER Filed March 19, 1929 2 Sheets-Sheet Patented Mar. 8, 1932 UNITED STATES WESLEY WAYNE HERBST; 4oE"I.I1slA,orr1o PRINTING PRESS :PAPER GRIPPER Application iled'March 19, 1929,. Serial No. 348,196.v

The invention relates to a device, a spring and lever gripper, to be used on platen printing presses, which is so designed as to be easily and readily locked in the chase,

V vat any position, along with the type form or within the furniture used in locking up the type form. The object is to afford a means of gripping the printed sheet firmly against the tympan sheet-at positions heretofore impossible with other style grippers-mainly for the purpose of preventing slurs and the slipping and blurring of the printed sheet.

One form of the invention is illustrated in the accompanying drawings.' Figure I is the assembled View of the gripper; Figure II is the same, top view. Figure III is a crosssection view of the base before the lever is in place.

Figure TV is the lever, the moving part of the gripper, and Figure V is a cross-seetion view of the complete assembled gripper. Figure VT is a plan viewof a chase including a sample type form, showing several of the grippers in operating` position. Figure VII is a cross-section view of a platen printing press showing the relative positions of the grippers, chase, and type form in regard to the platen.

The base 1 constitutes the rigid framework of the device. Tn the lever 2 we have the moving part of the gripper, consisting of shaft 8 with end shaped to button 4, both of which are an extensionoflever 2 which is rigid. The button 4 extends beyond the edge of base 1 allowing it (button) to strike tympan beyond printed sheet; also permitting the gripper to be locked within the type form itself as well as in the furniture surrounding the type. The button 4 is somewhat above type-high which gives it the necessary leverage and allows it to strike the tympan in advance of the type form. The button is so called because it is shaped to the smallest practical, blunt point. This point will be inked while passing under the ink rollers but the extended shaft 8 embracing button 4 is so designed as to allow the dot to fall outside of the printed sheet whether the device is locked within the type form or in the lookup furniture.

On opposite end of lever 2 is spring or tongue 6 which grips paper, fastened to lever 2 by means of screws 7.7 permitting the interchanging of different length tongues. This spring 6 is flexible allowing itto bend and adjust itself While pressing against printed sheet. The normal position. of spring 6. is down or-in other words, less than type-high so as to prevent its inking while being passed over by the inking rollers.

The lever 2 is held in place Within base 1 by rivet 3 which acts as pivot for lever 2. This lever 2 is placed inthe base 1 somewhat olf center, the end bearing they shaft 8 and buttonl 4 being shorter than the end bearing the spring 6.. This allows the spring 6 to be moved at a greater ratiothan the shaft 8 thereby allowing the spring 6' to strikethe printed sheet before the button 4 is compressed to its fullest degree. The end. of lever 2rcontainingy button 4 is supported and forced upward to its regular position when not being compressed in theprocess of printing by coily spring 5 which rests in groove 9 in the base 1. f

lReferring to Figures VI andl VII. In Figure VI is shown a plan View of sample type form 10 which is locked Within chase 11 through means of lookup furniture 12 and? quoins 13'. Inthisview it will benoted that the complete gripper' 14 has been shown` in several of its many operative positions..

The. gripper 14, `in five shown positions,v is locledfy outside of the type form 10, in the furniture 12, and in one instance, within the type form. 10.v It is seen in each case that the spring 6 which acts-as the gripper,.f`alls within that part of the type form 10 coming in contact'` with the paper or in otherV words the spring 6 will fall on the sheet ofpaper being printed. Further, the button 4 on shaft 8 in each Case falls outside the type form 10 and therefore outside the printing area, thus preventing the printed sheet being inked by the button 4. It Will be clearly seen through this illustration that the gripper 14 may be placed at any position within the chase 11, said position being governed by the size and nature of the particular type form being printed.

Figure VII shows the chase 11 holding the type form 10 and grippers 14: in itsregular vposition in the bed 15 of the platen press 1G. In the process ofprinting the bed l comes s in contact with the platen 17, and in so do- Y ing the button Il of the gripper 14 strikes the platen 17 vin advance ofythe'type L:form 10 allowing spring 6 to press against thesheet l 10 possibilityA of slipping. Inethe counter-acfr tion, the coil spring 5 forceslthe shaft-'- 8 back -v kinto position ashutton 4 leaves the vdraw u Y y sheet, thus lowering and preventingspring 6" "i coming in contact with rollers. 3 A y.

i I am aware that various: forms of grippers" consisting of Shafts? and springshavebeen mad'efprior tomyfinventioni :Itheretore do not claim :suchi azcombination broadly, ibut, I

.l A platen' printing press paper gripper whichA may be locked at anygposition Within the chase, alongvvvith the type form, the same consistingof `lever and spring tongue per mittingthe operation of the Yspringtongue rWithout its being inked when passed over hy theinking rollers. p Y

Y 2. A platen` printing `press paper gripper havinga rigid lever,'one endof .Which is shaped at-end to button, said button being v Y arranged to strike the tympanV in advance of the type form7 totherehy operate the device.

3. A platen printing press paper gripper having a rigid lever that is pivoted off-center p in the base .of the device,the spring end of which is longer than the button end permitting greater4 oscillation in the gripping spring. n Y f 4. A platen printingpress paperY gripper that may be loclfedwitliin the type form,l and Y 40 the lever and shaft permitting the arm cone Y V taining the button to fall outsideot printing areas.V

Y 5. A; platen printing press' paper gripper that may be locked outsideV theftype form `in 15 lthe furniture,eso the eXtendedspring (ad-'f justable'as to length)V Willffall Within the printing area,l thus gripping the sheet.

f6. lA platen printing press paper gripper A thatis so designed'that it may be locked 5U Within the chase ar'idrWithouteinterferencee Y and'adapted to be usedin conjunction if necessary With other'knovvn style grippers now in use. Y Y

WESLEY. WAYNE HERBST.

of paper 18 preventing smear, slutand thev n Y 

